Axom's Bump, (Blueprint Utilities for Mesh Processing) component provides useful building blocks for developing algorithms that operate on Blueprint data. There are views that simplify dealing with Conduit data and algorithms for processing and constructing meshes.

Design goals

This component's algorithms are mainly delivered as classes that are templated on an execution space, allowing them to operate on a variety of computing backends. The algorithms take Conduit nodes (containing Blueprint data) as input and output new Blueprint data in an output Conduit node. Where possible, algorithms have been broken out into classes to promote reuse.

Views

Blueprint defines protocols for representing various mesh and data constructs in a hierarchical form inside Conduit nodes. There are objects defined for coordinate sets (coordsets), mesh topologies, mesh fields, material sets (matsets), and there are various flavors of each type of object. This can make it difficult to write algorithms against Blueprint data since the data live in Conduit nodes with different names and they may have different formats. Conduit can also use multiple data types for any of the data arrays that represent objects. Bump views simplify some of these challenges by providing common templated interfaces that access different types of objects in a uniform way while also supporting multiple data types. Bump provides functions that can wrap a Conduit node in a suitable view and dispatch that view to a generic user-provided lambda, enabling algorithms to be instantiated for multiple data types with a compact amount of code.

Utilities

The Bump component provides algorithms for performing useful mesh operations such as extracting sub-meshes, merging meshes, clipping meshes, and creating relations. These building blocks can be reused to ease the process of writing additional algorithms that operate on Blueprint meshes.